import Vue from 'vue';
import Vuex from 'vuex';
import SockJS from 'sockjs-client';
import Stomp from 'stompjs';
import {getRequest} from "../utils/api";
import { Notification } from 'element-ui';

Vue.use(Vuex)

const now = new Date();

const store = new Vuex.Store({
    state: {
        routes: [],
        sessions: {},
        admins: [],
        currentAdmin: JSON.parse(window.sessionStorage.getItem('user')),
        currentSession: null,
        filterKey: '',
        stomp: null,
        isDot: {}
    },
    // 同步唯一修改state中变量的方法
    mutations: {
        initRoutes(state, data) {
            state.routes = data;
        },
        changeCurrentSession(state, currentSession) {
            state.currentSession = currentSession;
            Vue.set(state.isDot,
                state.currentAdmin.username+'#'+state.currentSession.username,
                false);
        },
        addMessage(state, msg) {
            let mes = state.sessions[state.currentAdmin.username + '#' + msg.to];
            if (!mes) {
                // state.sessions[state.currentAdmin.username + '#' + msg.to] = [];
                Vue.set(state.sessions, state.currentAdmin.username + '#' + msg.to, []);
            }
            state.sessions[state.currentAdmin.username + '#' + msg.to]
                .push({
                content: msg.content,
                date: new Date(),
                self: !msg.notSelf
            })
        },
        INIT_DATA(state) {
            //浏览器本地聊天记录
            let data = localStorage.getItem('vue-chat-session');
            //console.log(data)
            if (data) {
                state.sessions = JSON.parse(data);
            }
        },
        INIT_ADMINS(state, data) {
            state.admins = data
        },
        INIT_ADMIN(state, admin) {
            state.currentAdmin = admin;
        }
    },
    actions: {
        connect(context) {
            context.state.stomp = Stomp.over(new SockJS('/ws/ep'));
            let token = window.sessionStorage.getItem('tokenStr');
            context.state.stomp.connect({'Auth-Token': token}, success => {
                context.state.stomp.subscribe('/user/queue/chat', msg => {
                    console.log(receiveMsg)
                    let receiveMsg = JSON.parse(msg.body);
                    if (!context.state.currentSession
                        || receiveMsg.from!=context.state.currentSession.username) {
                        Notification.info({
                            title: '['+receiveMsg.formNikeName+']',
                            message: receiveMsg.content.length > 10 ?
                                receiveMsg.content.substr(0,10)+'...' : receiveMsg.content,
                            position: 'bottom-right'
                        });
                        Vue.set(context.state.isDot,
                            context.state.currentAdmin.username+'#'+receiveMsg.from,
                            true);
                    }
                    receiveMsg.notSelf = true;
                    receiveMsg.to = receiveMsg.from;
                    context.commit('addMessage', receiveMsg);
                })
            }, error => {

            });
        },
        initData(context) {
            context.commit('INIT_DATA');
            getRequest('/chat/admin').then(resp => {
               if (resp) {
                   context.commit('INIT_ADMINS', resp.obj);
               }
            });
        }
    }
});

store.watch(function (state) {
    return state.sessions
}, function (val) {
    console.log('CHANGE: ', val);
    localStorage.setItem('vue-chat-session', JSON.stringify(val));
}, {
    deep: true/*这个貌似是开启watch监测的判断,官方说明也比较模糊*/
})


export default store;